Category: How to

CloudFlare is a Contende Delivery Network (CDN) that offers peformance and security service. On average a website can load faster from approximately 25%-60% and uses lesser bandwidth on your physical server.

CloudfFlare operates by hiding your physical server from the prying eyes while allowing good connections like spiders and crawler bots to continue accessing your website. It also offers compression and content caching on the fly and copies your static website contents across it’s 74 server clusters around the world.

Failed to save enabled features : Virtualmin is configured to setup DNS zones, but this system is not setup to use itself as a DNS server. Either add 127.0.0.1 to the list of DNS servers, or turn off the BIND feature on the module config page.

This is a generic error telling the website administrator that the local DNS entries are being checked using external methods. Most of the time, this wont be a real issues but it causes a performance spike which depends highly on where the DNS entries are being searched.

In the computer and networking world, there is a nodename that is well used and yet at the same time called upon to be deprecated by some server admins. The nodename is called “hostname” which basically is a label assigned to the connected device in a computer network. This is widely used to identify the device from various forms of electronic communication such as the World Wide Web, e-mail or Usenet.

Virtualmin is an advance, powerfull and flexible web hosting control panel for your Linux and UNIX system. It is the virtual host magement module of the well-known Open Source web-based server management system Webmin. With virtualmin, you can manage multiple virtual hosts, multiple virtual domains, mailboxes, database, applications and other stuff from its comprehensive and friendly web interface.

Virtualmin is a comprehensive and excellent replacement for your cPanel and Plesk control panels . Virtualmin offersr the same features that you can find from the two mentioned control panels such as account creation, domain management, dns management, MySQL management and much more. Virtualmin also offers a control panel for non-root users for management of their hosting account.

Establish an SSH connection to your remote server using putty for Windows, Linux and Unix. I normally use Windows when setting up my *nix servers and I prefer kitty portable SSH client from 9bis. Kitty portable SSH client is a fork of Putty and a very good client.

For first time connections, a certificate will be presented to you which you can either accept and download or deny which will cause a termination of the current SSH session. In order to continue, you should “accept”, this prompt will also reappear if your server have done a massive change on it’s private certificate.

Webmin is an alternative hosting free control panel which function like CPanel. Webmin provides easy to use interface for managing your Unix/Linux system and provides a nice option to setup user accounts, Apache, DNS, file sharing and much more.

A Red Hat Enterprise and Centos Kernel Update from Red Hat Bug Fix Advisory (RHAB) informs the users of Red Hat Linux Servers (RHEL) and Red Hat Linux Desktop operating system to update and install the new linux kernel. The Initial announcement was for the Enterprise edition but the release applied to all.

After learning what CSF / LFD module can do, it is time for a small guide on how to install them. The guide is for RHEL type version of Linux which consist of Redhat, Fedora and CentOS. A separate procedure is needed for Debian based Linux which will be added later.

CSF is versatile enough to host more features other than the standard filtering of packets. CSF can give you login detection, brute force detection, system intrusion and flood detection. CSF have a UI integration for cPanel, DirectAdmin and Webmin.

CSF can also detect port scans, SYN flood and can temporarily or permanently block clients who are flagged as an attacker.

Squid is a full featured *nix based proxy-server that caches internet content and have the capability to hide your real IP. Squid can cache and proxy access from HTTP request to FTP access. As a proxy server, squid acts as an intermediary which connects to the remote server in behalf of the requestor, saves a cache copy for future and later use and then return the result to the original requestor.

Squid can act as a transparent proxy routing all the connections to itself without any of the original requestors programs being aware of the proxy service.